How Do I Know If My Home Has Structural Damage After a Storm?
Last updated October 31, 2026
The short answer
Check Walls and Ceilings for Cracks
After a storm, inspect your interior walls and ceilings carefully. Look for new cracks, especially those that are wide, diagonal, or extend from the corners of doors and windows. Stair-step cracks in brick or concrete block are a particular concern. Fresh cracks or old ones that have grown larger often indicate shifting or settling in the home's foundation or framing.
Pay attention to water stains or discoloration on ceilings and walls, as these can signal a leak that has weakened structural materials. Feel for damp or soft drywall or plaster. Persistent moisture from a storm can rot wood framing and compromise the strength of your walls over time.
Inspect Doors, Windows, and Floors
Walk through your home and try opening and closing all exterior doors and windows. New difficulty or sticking can mean the frame has shifted due to foundation movement or water damage. Look for gaps around window and door frames that were not there before. These signs often appear before more serious damage becomes visible to the untrained eye.
Examine your floors for changes. A sloping or sagging floor is a major red flag. You can check by rolling a marble across a flat section of floor. Also, feel for soft, spongy, or buckling spots in hardwood, laminate, or tile, which suggest water has damaged the subfloor underneath. These conditions can make a floor unsafe to walk on.
- Doors that no longer latch properly or scrape the floor.
- Windows that are hard to open, close, or lock.
- Visible gaps where walls meet the ceiling or floor.
- Sloping, sagging, or uneven floors in multiple rooms.
- Soft, spongy, or buckling floorboards underfoot.
- New or widening cracks in your foundation or crawlspace walls.
Examine the Roof and Exterior
From a safe distance outside, look at your roofline. A sagging ridge or dips in the roof plane can signal truss or rafter damage. Check for missing, cracked, or curled shingles that allowed water intrusion. Look for debris piles or damaged gutters, as clogged drainage can force water into your walls and attic, leading to rot in the structural wood.
Inspect your home's exterior siding and foundation. Look for new cracks in stucco, brick, or concrete. Separation between the house and porch or garage is a serious sign. Probe wood trim and siding with a screwdriver for soft spots indicating rot. Water from storm-driven rain can penetrate small openings and cause extensive hidden damage to the home's sheathing and framing.
Look for Signs of Water Damage
A persistent musty or earthy smell is a strong indicator of hidden moisture and potential mold growth within walls or under floors. Mold thrives on wet wood and drywall, breaking down these materials and weakening structural elements. This odor often appears before any visible damage, so take it seriously as a clue that water is present where it shouldn't be.
Look for water stains, peeling paint, or bubbling wallpaper. These signs show where water has traveled, even if the source is not obvious. Check your attic for damp insulation or stains on the underside of the roof decking. Look for standing water, efflorescence (white powder on concrete), or rotting wood on joists and beams in low areas or a crawlspace.
When to Call a Professional
If you observe any major warning signs like large cracks, sagging, or doors that won't close, stop using the affected area and contact local water damage pros immediately. They have the tools and expertise to perform a detailed water damage assessment, including moisture meters and thermal imaging, to find hidden water and evaluate the true extent of the structural compromise.
A professional inspection is crucial for safety and for insurance purposes. The pros can document all damage thoroughly, which you will need for a potential claim. Policies vary, and your insurer decides what is covered. They can also outline the necessary steps for structural drying and repairs to make your home safe again.
Water damage does not wait
Call (909) 655-4818 any time, day or night, and describe what happened.
Call Now (909) 655-4818Frequently asked questions
What should I do if I see a large new crack in my wall?
Mark the ends of the crack with tape and date it to monitor if it grows. Avoid putting pressure on that wall. This is a sign you should get a professional water damage inspection to determine the cause and assess if it indicates a structural problem that needs repair.
Can water damage from a storm make my house unsafe?
Yes, prolonged water exposure can rot wooden framing, rust metal connectors, and undermine foundations. This can weaken load-bearing walls, floors, and roofs. If you suspect significant water intrusion, have the pros evaluate the home's structure to ensure it is safe for occupancy.
How is structural damage from water repaired?
Repairs depend on the extent of damage. The process often involves removing ruined materials like drywall and insulation, thoroughly drying the structure with industrial equipment, and then replacing rotted or compromised framing members. Final steps include reinstalling walls, floors, and finishes to restore the home's integrity.
More questions and answers
- What Structural Damage Can a Fallen Tree Cause to a House?
- Can Bathroom Water Damage Affect the Structural Floor Below?
- How Does Wet Attic Insulation Cause Mold and Structural Damage?
- How Does Fire Damage Weaken Structural Beams?
- What Does Structural Damage From Water Look Like in Wood Beams?
- How Does an Insurance Adjuster Assess Storm Damage to a Roof?
- All articles